Receptors

Olfaction

sense of smell, These cells possess olfactory hairs where receptors for specific airborne molecules reside. Respond to chemicals to detect odors, System can recognize as many as 50-60 different primary odors as well as many thousands of other chemical stimuli.

Gustation

sense of taste, receptors are housed in specialized taste buds in papillae on the surface of the tongue. 4 types of papillae, 2 of which have taste buds, Human tongue can detect 5 basic taste sensations.